Symmetricom XL-GPS User Manual

2: System Specifications
The XL-GPS Network Time Server will respond to time synchronization requests from hosts
using these User Datagram Protocol/Internet Protocols (UDP/IP):
NTP ver. 3/4 UDP Port 123 - RFC1305 (Transmitted Timestamp Accuracy ±10 µS)
SNTP UDP Port 123 - RFC1361
TIME UDP Port 37 - RFC868
Oscillators
Standard TCVCXO
Accuracy: < 1 x 10
-12
@ 1 day when locked to GPS
Frequency/Timing Stability
(Allan Deviation)
1 x 10
-9
@ 1 sec
3 x 10
-10
@ 10 sec
3 x 10
-10
@ 100 sec
2 x 10
-10
@ 1000 sec
1 x 10
-12
@ 1 day
Temperature 5x10
-7
, over 0°C to 50°C when not locked to GPS
OCXO Oscillator option (87-399-30)
Accuracy: Function of input synchronization source
Frequency/Timing Stability
(Allan Deviation)
1 x 10
-10
@ 1 sec
1 x 10
-10
@ 1000 sec
1 x 10
-12
@ 1 day
Temperature 1 x 10
-8
, over 0°C to 50°C when not locked to a reference
Aging 5 x 10
-9
/ Day
Certification
Safety
UL UL60950-1
C-UL CAN/CSA-C22.2 No. 60950-1
IEC IEC 60950-1 Safety of Information Technology Equipment (ITE)
CE 2006/95/EC Low Voltage Directive (LVD)
Page 18 of 221 .................................098-00116-000 Rev. A

Symmetricom XL-GPS Specifications

General

Brand	Symmetricom
Model	XL-GPS
Category	Receiver
Language	English